, 
58 CONTRIBUTIONS TO AMERICAN HELMINTHOLOGY. 
organs answer well to Olsson’s description of D. ferox; the eggs, 
however, measure 0.096 mm. x 0.069 mm., while the following are 
measurements given for D. ferox : 
0.092 — 0.102 mm. x .049 mm. (Dujardin). 
0.06 mm. x 0.04 mm. (Olsson). 
The penis, exserted in all my specimens, is smooth, and measures 
about 2 mm. in length. 
The pharynx is pistilliform; the intestine bifurcates 2.08 mm. 
from the anterior end, and is very easily distinguishable from its 
dark brown contents (probably broken down epithelium and blood 
corpuscles), 
3.—DISTOMUM RETICULATUM, 7. sp. 
The Assistant Curator of the University Museum, while preparing 
a specimen of the Belted Kingfisher (Ceryle alcyon, Boie) in April, 
found two Trematode worms “on the surface of the lung,” which 
present in many respects a remarkable resemblance to D. hepaticum, 
L. I believe them to be hitherto undescribed, and I propose for them 
the specific name “reticulatum,” referring to the beautiful network 
formed by the branching and anastomosing testicular tubes shining 
through the translucent testicular area. 
Drscrietion (Fig. 6).—Body ovate, flat, or slightly concave ven- 
trally, separated by a constriction and by a large and projecting 
acetabulum from the upturned neck. Total length, 14 mm. ; greatest 
breadth, 8mm. Entirely covered with recurved rounded 0.025 mm, 
long spines, which are closer and smaller on anterior part of neck. 
Anterior sucker bowl-shaped, 0.9mm. wide. Acetabulum 1.3 mm. 
diameter, orifice circular. Pharynx oval, thick-walled, 0.48 mm. 
wide. Intestinal coeca unbranched (?). Bifurcation shortly behind 
pharynx. Genital orifice immediately in front of acetabulum. Penis (?). 
Uterine gyri overlying and extending behind the acetabulum. Testes, 
in the form of branched tubes, occupying a translucent oval area, 
with black borders narrower posteriorly, formed by the vitelligenous 
glands, which are disposed in a racemose manner round a dorsal and 
a ventral longitudinal stem on each side. Eggs average 0.11 mm. 
x 0.065 mm. 
The above description contains most of the points which can be 
observed by studying this worm entire by the aid of a compressorium. 
Probably slicing will give better results as to the disposition of the 
genital apparatus and intestinal coeca. The ease with which the 
